Prometheus Alertmanager Test (Dadjoke Version)

dadjoketest.sh

#!/bin/bash

# This script fetches a random dad joke and then sends it as a
# test alert to Alertmanager.

echo "Fetching a random dad joke from icanhazdadjoke.com..."

# Fetch the joke as plain text and store it in a variable.
# The User-Agent is requested by the API's documentation.
JOKE=$(curl -s -H "Accept: text/plain" -H "User-Agent: Prometheus Alert Test (https://example.com)" https://icanhazdadjoke.com/)

# Check if the joke was fetched successfully
if [ -z "$JOKE" ]; then
    echo "Failed to fetch a joke. Please check your internet connection."
    exit 1
fi

echo "Joke fetched: $JOKE"
echo "Sending test alert to Alertmanager..."

# Construct the JSON payload using a heredoc for readability.
# The ${JOKE} variable is embedded directly into the description.
PAYLOAD=$(cat <<EOF
[
  {
    "startsAt": "$(date -u +"%Y-%m-%dT%H:%M:%SZ")",
    "annotations": {
      "summary": "This is not a drill... It's a dad joke.",
      "description": "${JOKE}"
    },
    "labels": {
      "alertname": "DadJokeEmergency",
      "instance": "comedy-central",
      "job": "joke-delivery-service",
      "severity": "none"
    }
  }
]
EOF
)

# Send the final payload to Alertmanager
curl -X POST -H "Content-Type: application/json" http://localhost:9093/api/v2/alerts -d "${PAYLOAD}"

echo -e "\nTest alert sent!"